Backgrounder: Key Oscar nominations

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LOS ANGELES, Feb. 24 (Xinhua) -- Hollywood's biggest stars hit the red carpet Sunday for the movie industry's biggest night. Following is a list of nominees in key categories of the Oscars for 2012.

-- BEST PICTURE

"Zero Dark Thirty," "Django Unchained," "Argo," "Les Miserables," "Amour," "Life of Pi," "Beasts of the Southern Wild," "Silver Linings Playbook", "Lincoln."

-- BEST ACTOR

Daniel Day-Lewis ("Lincoln"), Denzel Washington ("Flight"), Hugh Jackman ("Les Miserables"), Bradley Cooper ("Silver Linings Playbook"), Joaquin Phoenix ("The Master").

--BEST ACTRESS

Emmanuelle Riva ("Amour"), Jessica Chastain ("Zero Dark Thirty"), Naomi Watts ("The Impossible"), Quvenzhane Wallis ("Beasts of the Southern Wild"), Jennifer Lawrence ("Silver Linings Playbook").

-- BEST DIRECTOR

Steven Spielberg ("Lincoln"), Michael Haneke ("Amour"), David O. Russell ("Silver Linings Playbook"), Ang Lee ("Life of Pi"), Benh Zeitlin ("Beasts of the Southern Wild").

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